More than 50 workers have since been forced to quarantine.
A Sydney Woolworths store has been locked down after employee who travelled from Victoria tests positive.
According to NSW chief health officer Kerry Chant, more than 50 workers at the Balmain store have been forced to quarantine as a result. And the store was given a deep clean on July 1.
Mr Chant revealed the man had tested positive while he was being quarantined in a hotel in Victoria, however he had since been cleared of the virus before he returned to Sydney.
"If you are symptom free 72 hours and it's been at least 10 days since your onset of your symptoms than you are deemed non-infectious," Dr Chant said.
"The reports from Woolworths was there wasn't really any overcrowding… even though it's quite a compact store."
The Woolworths worker was in the self-serve checkout section, and was considered to be a 'low-level' of infectious.
Although the worker was reportedly wearing a mask on his flight from Melbourne to Sydney, doctors are still cautious that he could have infected anyone nearby.
Passengers who came into contact with the man on the flight will be contacted by NSW health.
The employee was working in the self-checkout section of the Balmain supermarket.
Meanwhile, NSW Health Minister Brad Hazzard added that anyone who visited the Balmain Woolworths supermarket recently should stay on the 'alert' for symptoms.
"His employer, a manager in the store, asked him to have another test because he obviously had some sort of symptoms and that test has come back positive," he said.
"We've got to work on the basis that it's positive, although sometimes these come back to be false positives, but right now we have to work on the basis that it's a positive."
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